Scott



(No Model.) I

S. G. FREEMAN & J. B. SOWARD.

' BURGLAR ALARM. 8 8 No. 384,752. 8 Patented Ju19, 1888.

WITNESSES. v j INVENTOR:

$4M Allyn/w g ATTORN UNITED STATES PATENT O FICE.

SCOTT O. FREEMAN AND J OI IN B. SOWARD, OF NEVADA, MISSOURI.

BURGLARa-ALARM.

SPECIFICATION forming part of Letters Patent No. 384,752, dated June 19,1888.

Application filed March 6. 1888. Strial No. 266,334.

To aZZ whom it may concern.-

Be itknown that we, SooTT C. FREEMAN and J OHN B. SOWARD, of Nevada,iuthe county of Vernon and State of Missouri,haveinvented a new andImproved Burglar-Alarm,0f which the following is a full, clear, andexact description.

My invention relates to an improvement in burglar-alarms, and has forits object to provide a means whereby,wheu a window or door is openedattached to said device, a hell or bells will be caused to ring andannounce the fact and continue to ring until stopped by an inmate of thepremises or until the power of the device is exhausted.

The invention consists in the construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claim.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar letters of reference indicate corresponding parts inall the figures.

Figure 1 is a vertical section through the device,illustrating the sameas connected with a door and window. Fig. 2 is a partial section on theline 00 a" of Fig. 1, and Fig. 3 isa partial plan view.

In carrying out the invention, A represents a box or casing in which aframe, A, is seouter extremity is squared to receive a suitablekey,whereby the spring B is wound.

Upon a post, 0, at one side of and-below the spring a lever, D, ispivoted, at or near its center, having one extremity, d, hook-shaped toengage the ratchet-wheel b, and the other extremity, which projectsbeyond the frame, is provided with a pin, d, attached at right angles tothe inner face, as best shown in Fig. 2. The lever D is preferably madein one piece, and the hook end is normally held in engagement with theratchet-wheel b by a spring, d attached to the said lever and post 0,and coiled around the latter.

To the under side of the frame, above the le- (No model.)

'ver D, one end of an angular spring-plate, e,

is attached, the vertical member whereof is adapted to bear against theupper face of the lever D when the latteris in its normal position, andengage the lower edge of the lever when disengaged from theratchet-wheel, I

the ratchet-lever, as shown in Fig. 2, and from the other end of thelevers F rods F are projected downward through the casing, connectionbeing made from said rods F with the door H or windows Hof the house, orboth, in any approved manner. One form of connection is illustrated inFig. 1, in which wires are run through eyes h to an attachment with thesash and also to an engagement with the extremities of a plate pivotedupon or secured to the knob-spindle Upon an arbor, K, at one side, apinion, k, is secured to mesh with the gear I), and beyond saidpinion,upon the 'same arbor, an escapement-wheel, 7c, is attached. Infront of the escapement-wheel a shaft, is, is pivoted, carrying apallet, k, to which shaft the strikingrod k is fastened, adapted for usewith a bell, K, upon theouter side of the box.

We do not limit ourselves to the exact chain tion. When by means of thebar e the ratchet, lever is released, the spring d forces the hook endof said lever in engagement with the ratchet. 4

Having thus described our invention, what we claim as new,and desire tosecure by Letters Patent, is

In a burglar-alarm, the combination, with the bell, its strikingmechanism, and a suitable frame, A, of the detent-lever D, pivotedbetween its ends on a post, 0, and having a hooked inner end, d,engaging the ratchet I) on said striking mechanism, and a cross piece orrod, d, at its outer end, a spring, (1 holding said ratchet and hookengaged, the lever F, pivoted between its ends and engaging the bar orrod (1, to throw the hooked end thereof out of engagement with saidratohet,thespringcatch 6, secured to the frame A adjacent to the leverD, to snap into engagement there- 15 with and hold its hooked end awayfrom the ratchet to allow the striking mechanism to operate until itruns down, and the rod or handie for moving the springcatoh away fromthe said lever to reset the alarm, substantially as 20 set forth.

SCOTT C. FREEMAN. JOHN B. SOlVARD. \Vitnesses:

DAVID HUFFSTUTTER, "W. H. COLTMAN.

